Name: _______________________________________________ Date:_______________

Ecology Webquest: The Peril River Problem

Go to the URL: http://biomanbio.com

On the right hand side menu, click on the Ecology button and then the Ecodetectives: The Peril River Problem.

Follow the directions to learn about both the Species Diversity and Abundance problem and the Water Quality Issues problem.

Species Diversity and Abundance problem:

1.      What is species diversity?

 

2.      Has biodiversity increased or decreased over time in the Peril River?

 

 

3.      Which animal groups have decreased in number since 1950 according to the graph?

 

 

4.      What can you conclude about species abundance and diversity in the Peril River Watershed area? (write out your answer)

 

 

 

Water Quality Issues problem:

5.      Based on your observations, which water sample has more algae?  Blue or green

 

6.      Based on your observations, which water sample has more bacteria?  Blue or green

 

 

7.      Calculate the average dissolved oxygen for each site and input it into the appropriate locations on the data tables below.

Test Site 1                                                                                           Test Site 6

Sample

Number

Dissolved Oxygen

(mg/L)

 

Sample

Number

Dissolved Oxygen

9mg/L)

1

8

 

1

2

2

8

 

2

4

3

11

 

3

2

4

8

 

4

4

5

9

 

5

3

6

10

 

6

3

Average

 

 

Average

 

 

8.      What can you conclude about dissolved oxygen in the Peril River Watershed area? (write out your answer)

 

 

9.      Which site is likely to have more fish?  Test Site 1 or Test Site 6

 

10.  How does dissolved oxygen affect living organisms in the river? (write out your answer)

 

Click on the Investigate and Experiment button. Mouse over the Hypothesis 1 button and write the hypothesis below. Next click on the Hypothesis 1 button.

Investigate and Experiment:

Hypothesis 1: _________________________________________________________________

_____________________________________________________________________________

11.  What are nitrates?

 

12.  Why might too many nitrates cause a problem?

 

13.  What is the result of too much bacteria that decomposes the algae?

 

 

Goal 1: _______________________________________________________________________

______________________________________________________________________________

Distance from Control Test Site (km)

Test Results:

Nitrate Concentration (mg/L)

0

 

10

 

20

 

30

 

40

 

50

 

60

 

 

Complete the graph below. Label the X and Y axes correctly. Plot the points from the date table above and connect the dots.

Nitrate Concentration (mg/L) on the Peril River at Several Distances from the Upstream Control Site.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14.  Where is the excess nitrate fertilizer probably coming from?

 

Conclusion 1: _________________________________________________________________

_____________________________________________________________________________

Click on the Test Other Hypotheses button. Mouse over the Hypothesis 2 button and write the hypothesis below. Next click on the Hypothesis 2 button.

Hypothesis 2: _________________________________________________________________

_____________________________________________________________________________

15.  What are acids?

Goal 2: _______________________________________________________________________

______________________________________________________________________________

Distance from Control Test Site (km)

Test Results:

pH

0

 

10

 

20

 

30

 

40

 

50

 

60

 

 

16.  Is there evidence of acidic pollution entering the river?

 

Click on the Test Other Hypotheses button. Mouse over the Hypothesis 3 button and write the hypothesis below. Next click on the Hypothesis 3 button.

Hypothesis 3: _________________________________________________________________

_____________________________________________________________________________

17.  What are pesticides?

 

18.  Why might too many pesticides cause a problem?

 

 

Goal 3: _______________________________________________________________________

______________________________________________________________________________

Distance from Control Test Site (km)

Test Results:

Pesticide Concentration (ppm)

0

 

10

 

20

 

30

 

40

 

50

 

60

 

 

Complete the graph below. Label the X and Y axes correctly. Plot the points from the date table above and connect the dots.

Pesticide Concentration (ppm) on the Peril River at Several Distances from the Upstream Control Site.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

19.  Where is the pesticide pollution probably coming from?

 

Conclusion 3: _________________________________________________________________

_____________________________________________________________________________

20.  What is the pesticide found in the river by chemical analysis?

 

21.  The levels seen in the Peril River indicate that DDT is being currently used on the farm. What is your conclusion?

 

22.  Which animal has the highest concentration of DDT in its tissues?

 

 

23.  What is biomagnification?

 

24.  Give the example of biomagnification as a food chain.

 

 

 

25.  Why does DDT become more concentrated higher in the food chain?

 

26.  How is DDT causing low pelican numbers in the Peril River area?

 

Click on the Home button and then click on the Restoration button.

27.  What is/are your recommendations for fixing the problem with the Peril River area (write out your answers) (Hint: you can pick more than one action)?

 

 

28.  What animal types have increased since 2012 as a result of reducing DDT in the environment?

 

29.  Based on your observations, has biodiversity in the ocean experienced a recovery due to your action plan?

 

 

30.  How effective has your two-part action plan been at addressing the problem of low species diversity and abundance? (write out your answer)

 

31.  Calculate the average dissolved oxygen for each site and input it into the appropriate locations on the data tables below.

Test Site 1                                                                                           Test Site 6

Sample

Number

Dissolved Oxygen

(mg/L)

 

Sample

Number

Dissolved Oxygen

9mg/L)

1

8

 

1

9

2

8

 

2

7

3

11

 

3

9

4

8

 

4

8

5

9

 

5

10

6

10

 

6

11

Average

 

 

Average

 

 

32.  Compared to the original condition of the river, how has monitoring and regulation nitrate fertilizer runoff plus eliminating DDT runoff affected water quality in Peril River Watershed? (write out your answer(s)

 

 

Summary Evaluation: __________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

On the right hand side menu, click on the Ecology button and then the Angry Aliens: Ecology button. Play the game. Start at the first level and work your way down the levels.